Best Shopify Plus Agency
for High-Growth Ecommerce Brands
You’ve outgrown your platform. Your team is patching problems instead of driving growth. It’s time to work with the Shopify Plus agency that’s launched and scaled 1,000+ stores — with zero bad reviews, ever.
NYC-based. Shopify Plus Certified. 11+ years in business. Your competitors are already on Shopify Plus — the only question is whether you’ll beat them there.
- Custom Shopify Plus Development & Headless Commerce
- Enterprise-Grade Design & Conversion Rate Optimization
- Strategic SEO & Platform Migration for Scalable Growth
- B2B Commerce, AI SEO & Ongoing Support
Most Shopify Plus Agencies Overpromise and Underdeliver
You’ve seen the playbook: slick deck, confident pitch, contract signed — then missed deadlines, bloated invoices, and a store that still doesn’t convert. The average high-growth brand leaves $250K–$1M+ on the table every year they work with the wrong agency.
- Your platform crashes during traffic spikes
- Checkout friction is quietly killing your conversion rate
- You’re leaving international revenue untouched
- Your dev agency takes weeks to respond, bills hourly for every tweak
- No CRO strategy — you’re guessing instead of testing
- You want B2B wholesale and D2C on one unified platform
If any of those hit home — keep reading.
A Shopify Plus Agency Built Around Your Growth — Not Our Process
Three phases. Fixed-price contracts. Every deliverable documented.
Phase One
Discovery & Strategy
We learn your business before we touch a line of code. Every engagement starts with an in-depth discovery session mapping your revenue goals, auditing your tech stack, and analyzing your customer journey.
- Stakeholder workshops & goal alignment
- Full technical and UX audit
- Competitive analysis & market positioning
- Fixed-price proposal with clear milestones
Phase Two
Build & Launch
Custom theme engineering. Bespoke app development. ERP integrations. Advanced checkout customization. Built for performance, not just aesthetics. Every project ships with a 30-day post-launch warranty.
- Custom Shopify Plus theme (mobile-first)
- Bespoke app & API integrations
- Advanced checkout & Shopify Scripts
- Full QA, load testing, phased launch
Phase Three
Scale & Grow
Launch is day one — not the finish line. Post-launch, we become your embedded growth team: running CRO experiments, executing AI SEO, expanding into new channels, and protecting your uptime 24/7.
- Monthly CRO audits & A/B testing
- AI SEO — content, links, technical
- Priority support & dedicated account manager
- Proactive recommendations, not reactive fixes
What Happens When You Work with the Best Shopify Plus Agency
We don’t deal in hypotheticals. Here are real outcomes from real brands that trusted Blackbelt Commerce to scale their Shopify Plus stores.
One of the world’s most iconic luxury handbag brands needed a Shopify Plus store worthy of their name. We delivered a fully custom build with ERP integration that handles massive traffic spikes without flinching.
- 187%+ mobile conversion improvement
- 0% downtime during peak traffic & drops
- Full ERP/CRM backend sync implemented
They had traffic but couldn’t capture it. We stabilized their Shopify Plus codebase, optimized the conversion funnel, and implemented ongoing support that keeps their store performing at an elite level every month.
- 50K+ sessions/month — stable, fast, always up
- 4.5% CVR (industry avg: 1.5–2%)
- Full platform stabilization from code-level audit
Three months. That’s all it took to completely transform Erica Wilson’s organic sales. A redesigned Shopify 2.0 store combined with our AI SEO strategy turned their site into a compounding revenue engine.
- Organic traffic: 3K → 27.7K (614% increase)
- Organic sales: $19K → $153K in 90 days
- Mobile-first redesign with full CRO strategy
Transparent Pricing. No Surprises. Ever.
The best Shopify Plus agency for growth doesn’t hide pricing behind a “contact us” wall. Here’s what real Shopify Plus investment looks like — so you can self-qualify and show up ready to move.
Growth
DTC brands migrating to Shopify Plus for the first time or launching a new store from scratch.
- Discovery & strategy session
- Custom Shopify Plus theme (up to 15 pages)
- Up to 3 third-party app/API integrations
- Mobile-first, conversion-optimized design
- Basic checkout customization
- SEO foundations (technical + on-page)
- 30-day post-launch support & warranty
Tier 2 — Scale
Scale
High-growth brands scaling past $1M ARR needing a full-service Shopify Plus migration agency and growth partner.
- Everything in Growth, plus:
- Full Shopify Plus migration from any platform
- Custom Shopify app development
- Advanced checkout & Shopify Scripts
- B2B wholesale portal or multi-storefront
- ERP / PIM / CRM integration
- CRO audit & A/B testing roadmap
- AI SEO kickoff
- 3-month ongoing support retainer included
Enterprise
Enterprise brands with complex tech stacks, international markets, high-volume traffic, or headless commerce requirements.
- Everything in Scale, plus:
- Headless commerce (Hydrogen/Oxygen)
- Multi-region, multi-currency, multi-language
- Custom PWA development
- Advanced B2B portal with custom pricing logic
- Full analytics stack (GA4, Segment, Klaviyo)
- Priority SLA — 4-hour response
- Quarterly business reviews & planning
Not sure which tier fits? Book a free 30-minute strategy call — no pitch deck, no pressure.
Everything You Need to Build, Launch, and Scale — Under One Roof
When you hire Blackbelt Commerce, you get a full-service Shopify Plus agency that owns your growth from day one.
Shopify Plus Migration
From Magento, WooCommerce, BigCommerce, or any custom platform — zero revenue disruption, full data integrity.
Custom Development
Bespoke themes, custom apps, advanced API integrations, and Shopify Scripts — built from scratch, built to perform.
Conversion Rate Optimization
Heatmaps, A/B testing, UX redesigns, and checkout optimization. Average 38% lift in add-to-cart rates.
B2B Commerce
Custom wholesale portals, tiered pricing, net terms, multi-buyer account management — natively on Shopify Plus.
Business Scaling
International expansion, multi-currency, multi-storefront, and headless architecture for brands ready to go global.
AI SEO
AI-powered SEO combining organic link building, technical SEO, and content marketing to drive compounding revenue.
Ongoing Support
Proactive maintenance, priority support, monthly performance audits, and continuous optimization — always improving.
Headless Commerce
Hydrogen/Oxygen implementations and custom PWA builds for maximum front-end performance and multichannel flexibility.
ERP, PIM & Integrations
Seamless connections to your fulfillment, CRM, ERP, and analytics stack — one source of truth for your entire operation.
Checkout Customization
Custom payment flows, subscriptions, post-purchase upsells, and enterprise checkout — exclusive to Shopify Plus.
Performance & Uptime
Load-tested for peak traffic. We’ve run $300K+/month stores with 75K+ sessions/month — zero downtime events.
Fixed-Price Contracts
No hourly billing surprises. Every project is scoped, documented, and priced up front. You always know what you’re getting.
“Blackbelt Commerce Is a Great Team to Work With.”
Judith Leiber is one of the most iconic luxury brands in the world. Their CFO and CCO recorded this review. That says everything about how we treat our clients.
Judith Leiber — Mary Ann Dennin (CFO) & Jana Matheson (CCO)
“They guided us and educated us along the way. Blackbelt Commerce met all timelines, kept within budget, and has been available post-launch to ensure we’re satisfied. We would highly recommend Blackbelt Commerce for all your website needs.”
— Mary Ann Dennin, CFO & Jana Matheson, CCO · Judith Leiber NY
Stores That Don’t Just Look Good — They Perform
From iconic luxury fashion to global sports and wellness brands — Shopify Plus stores we’ve built and scaled.
Lakers Store
Custom Shopify Plus store for one of the most iconic franchises in sports.
Judith Leiber
A $1M+ revenue launch and world-class digital flagship for an iconic luxury brand.
Gogglesoc
Conversion-optimized Shopify Plus build for the world’s leading goggle cover brand.
Progurt
11 international Shopify stores built and managed for a global probiotic brand.
Dollcake
A beautifully crafted Shopify Plus store for an Australian cult-favorite fashion label.
Captain Fin
A performance-first Shopify Plus store for the legendary surf and lifestyle brand.
Everything You Want to Know Before Hiring a Shopify Plus Agency
Results: $0 to $1M+ for Judith Leiber, 700% organic sales growth for Erica Wilson in 90 days, $500K/month for SilverLining Herbs.
Retention: 95%+ of clients add an ongoing support retainer after launch — because we treat post-launch as a starting point, not a finish line.
Reviews: Perfect 5-star rating on Google and the Shopify Partner Directory. Zero bad reviews. Ever. In 11+ years.
We Back Our Work. Every Single Project.
Hiring a Shopify Plus agency is a significant investment. Here’s exactly what protects you before you sign anything.
30-Day Post-Launch Warranty
Every project includes a 30-day post-launch warranty — included in the project price, no exceptions. If something breaks after launch due to our work, we fix it. On us.
Fixed-Price Contracts
You’ll never receive a surprise invoice. Every project is scoped upfront with itemized deliverables and a fixed price. Changes are agreed on before they’re made.
Milestone-Based Delivery
We don’t disappear into a six-month build. Every project is managed in Agile sprints with milestone demos — so you’re reviewing real work, not waiting on promises.
5-Star Reputation Guarantee
We have never received a bad review in 11+ years. That’s accountability baked into every engagement — not a talking point, a track record.
Transparent Communication
Dedicated project manager. Live project boards. Weekly sprint demos. You’ll never wonder what’s happening with your project.
We don’t take on every client who approaches us. We take on clients whose goals we’re confident we can achieve. If that’s you — let’s talk.
Ready to Work with the Best Shopify Plus Agency for Your Brand?
1,000+ stores launched. 11+ years. Zero bad reviews. A team that treats your revenue like their own.
Your next revenue milestone is one conversation away. Book a free 30-minute strategy call — no pitch deck, no pressure. Just a straight talk about your goals and what it takes to get there.
Due to high demand, we prioritize enterprise projects — book early to secure your timeline.
